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11th Class Chemistry Organic Chemistry: Some Basic Principles & Techniques / कार्बनिक रसायन : कुछ मूलभूत सिद्धांत एवं तकन Question Bank 11th CBSE Chemistry Organic Chemistry: Some Basic Principles & Techniques

  • question_answer
    The \[{{R}_{f}}\] value of A and B in a mixture determined by TLC in a solvent mixture are 0.65 and 0.42 respectively. If the mixture is separated by column chromatography using the same solvent mixture as a mobile phase, which of the two components, A or B, will elute first? Explain.

    Answer:

                    Since the \[{{R}_{f}}\] value of A is 0.65, therefore, it is less strongly adsorbed as compared to component B with \[{{R}_{f}}\] value of 0.42. Therefore, on extraction of the column, A will elute first.


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